naive-ui/styles/Switch.scss

@import './mixins/mixins.scss';
@import './theme/default.scss';

@include b(switch) {
  & {
    display: inline-block;
  }
  .n-switch__rail {
    position: relative;
    height: 14px;
    width: 30px;
    border-radius: 7px;
    background-color: rgba(148,151,155,0.4);
    margin: 3px;
    transition: background-color .2s $default-cubic-bezier;
    &::before, &::after {
      content: "";
      position: absolute;
      height: 20px;
      width: 20px;
      border-radius: 10px;
      top: -3px;
      left: -3px;
      box-shadow:0px 2px 4px 0px rgba(0,0,0,0.4);
      transition: left .2s $default-cubic-bezier, opacity .2s $default-cubic-bezier;
    }
    &::before {
      background-image: linear-gradient(52deg,rgba(148,151,155,1) 0%,rgba(148,151,155,1) 100%);
      opacity: 1;
    }
    &::after {
      background-image: linear-gradient(52deg,rgba(120,205,104,1) 0%,rgba(20,166,165,1) 100%);
      opacity: 0;
    }
    &.n-switch__rail--active {
      background-color: rgba(97, 196, 118, .27);
      &::before {
        left: 13px;
        opacity: 0;
      }
      &::after {
        left: 13px;
        opacity: 1;
      }
    }
    &.n-switch__rail--disabled {
      cursor: not-allowed;
      opacity: .5;
    }
  }
}